Calculating machine



CALCULATING MACHINE Filed De Q. 19, 1958 5 Sheets-Sheet 1 Jan. 14, 1941-. w. KNIEHAHN CALCULATING MACHINE Fi led Dec.

19, 1938 5 Sheets-Sheet 2 [77 v 6 re er.- Werner Kmiel 1111 y Jan. 14, 1941. w. KNIEHAHN CALCULATING MACHINE Filed Dec.

5 Sheets-Sheet 3 I71 1/6 72 Zo/w Werner K742271111: 5

Jan. 14, 1941. w N, $228,830

ICALCULATIING MACHINE Filed D60. 19, 1938 5 Sheets-Sheet 4 fwvergfor: Werne K714324111: y

Jan. 14, 1941. w N E A N 2,228,830

' CALCULATING MACHINE Filed Dec. 19, 1938 5 ,Sheets-Sheet 5 In verzzo/n- Werner A mlelaln B Az ogweyw Patented Jan. 14, 1941 PATENT OFFICE CALCULATING MACHINE Werner Kniehahn, Chemnitz, Germany, assignor to Wanderer-Wake Aktiengesellschaft, Siegmar-Schonau, Germany Application December 19, 1938, Serial No. 246,714

In Germany December 21, 1937 2 Claims.

This invention relates to calculating machines having a plurality of accumulators for which a drive connection can be selectively established, for the purpose of bringing the accumulators in mesh with amount transmitting actuators.

An object of the present invention is to provide a calculating machine in which a rapid and reliable selection and engagement of accumu- 'lators is eflected.

According to the invention the driving connections are first preparatorily set up for all accumulators subject to selection by means of members actuated by the machine drive, and the F driving connections are maintained by means of an auxiliary power controlled by selecting means in themachine, only for those accumulators which are actually selected.

An example of a machine embodying the invention of the application is illustrated in the drawings in which: a

Figure 1 is a section through a mechanism for selecting and engaging the accumulators,

Fig. 2 is a partial elevation of the engaging means taken at line 22 of Fig. 1,

Fig. 3 is a section through the accumulator selector mechanism taken .at line 3-3 of Fig. 1,

Fig. 4' is an elevation of the drive means of the cams for actuating the coupling members,

Fig. 5 is a view of the control means for engaging the accumulator,

Fig. 6 is a diagram of connections of an electrical system for selecting the accumulators, and

Fig. 7 is a section through the machine.

' Figure 6 shows a diagram of connections of a machine in which the accumulators are selected by auxiliary power employing electric current.

The accumulators can be selected both by selector keys la to ii, and in dependency on the movement of the paper carriage III by means of contacts 38o-33i. The selection of the accumulators is effected by means of solenoids Ila-Iii. Electric current is supplied through main conductors 22 and 23. The main conductor 22 leads to a main switch 24. and thence to a bus conductor 40 for the solenoids From the solenoids the current flows through the lower conductors either through contacts 3311-381, return conductor 39, and switches 25, 23 to the second main conductor 23, or over contacts 2a-2 the return conductor 42 and switches 25, 20 to the second main conductor 23. The main switch 24 is closed on depression of the motor key 2|, and on return of the motor key into position of rest at the end of the workin cycle of the machine, it reopens. By closing the main switch 24 the contacts closed by the paper carriage ill or by the selector keys before the machine operation, are made operative so that the operation of the parts, set by means of the contacts, for selecting the accumulators, at the 5 beginning ofeach machine operation takes place.

The selection of an accumulator by the paper carriage takes place as follows. Rollers 36 consisting preferably of fiber or other non-conduct- 1 ing material are adjustably and exchangeably mounted on the paper carriage, which rollers cooperate with contact carriers 31 which operate the contacts 38. All the contacts 38 on the side of the contact carrier 31 are connected by means of a'common conductor 39. This conductor extends either through the switch 25 and the switch 20, or through only the switch 20, to the supply conductor 23. If, as in Fig. 6, the carriage contact 33 corresponding to the solenoid III is closed, current will flow upon closure of the main switch 24, over 24, 40, Hf, 38f,'31, 39, 25, 20 to conductor 23'and actuates an iron core of the solenoid iii in such a manner that the accumulator corresponding tothe said carriage contact is selected.

The selection of an accumulator by one of the selector keys la to Ii takes place as follows. On depressing any one of the selector keys, the switch operating bar 4| is moved to the right whereby the two-way switch 25 is so actuated that the conductor 39 leading to the carriage contacts 31, 38 is disconnected from the supply conductor 23, and the conductor 42 is connected to said conductor 23. In this manner all the carriage contacts 38 are rendered inactive and the selection of an accumulator between selector keys can take place without obstruction and independently of any accumulator which may have been engaged by the paper carriage l0.in the corresponding position. On depressing the selector keys, contacts 2a'2i are operated which are connected through the bus conductor 42 and two-way switch 25 to the supply conductor 23, and also, similarly to the carriage contacts 38, 45 are connected to the solenoids. If for example the key la is depressed, thecorresponding contact 2e and solenoid lle are connected, while at the same time the solenoid 38f switched in through the carriage contact 33, Fig. 8, is rendered inoperative by the shifting of the two-way switch 25 and the disconnection of the conductor The accumulators 5i, Fig. 2, have shafts 52 carrying guides 53 by which they are guided in 55 cumulator supporting frame. This frame 54, 56 along with the actuators for the accumulators hereinafter described is arranged below the machine, Fig. '7, preferably forming a drum shaped unit. The guides 53 are fastened by means of screws 55 on the shafts 52 of the accumulators and inside the side plates 54--56 collars 51 provided with grooves in which tension springs 58 are accommodated. The springs 58 are attached to pins 59 and act generally to draw the accumulators outwardly away from the center of the drum. The accumulators 5| are actuated by actuator gears 60 common to all the accumulators. Along side each actuator gear is located the tens transfer wheel 230. The actuator gears 60 and the tens transfer wheels 230 are thus alternately arranged alongside each other. Both wheel sets 60, 230 are mounted loosely on a shaft 210 which also serves to space the side plates 54, 56. The wheels 60, 230 are guided in combs 23I which also serve to stiffen the accumulator supporting frame.

The actuator gears 60, Fig. '1, are connected through intermediate wheels 232 with actuator racks 233. Springs 234, 235 connect the actuator racks 233 with bars 236. The guide bars 236 are engaged by rack sectors 231 the movement of which is controlled in known manner by the digit keys.

The tens transfer wheels 230 operate to release a tens transfer mechanism, not shown.

The accumulators 5| are brought into engagement with the actuator gears 60 in the following manner. On the plates 54, 56 of the accumulator frame there are rotatably mounted on axes 64, engaging levers 62, 63 for each accumulator. These engaging levers 62, 63 have bevels 65 at their lower ends, Fig. 2, which cooperate with rollers 66 on the ends of the accumulator shaft 52 in such a manner that on turning of the levers 62, 63 in clockwise direction, Fig. 2, the accumulators are brought into engagement with the actuator gears 60 by the pressure of the bevel 65 on the roller 66. To engage an accumulator the levers 62, 63 must be coupled with an engaging wheel 61, Figs. 1, 2 and 4. The engaging wheel 61 is mounted on a stub portion 21I of the shaft 210 and is attached to the side plate 54 by means of distance pieces 260, the wheel having elongated holes 26I therein through which guide screws 262 extend, to permit a to and fro or oscillatory movement of the engaging wheel 61. The coupling is effected by means of a pin 14. Tension springs 68 wound about the shaft 64 and attached to the side plate 54, act as restoring springs for the levers 62, 63, Fig. 1.

The coupling of the engaging levers 62, 63 with the engaging wheel 61 by means of the pin 14 takes place as follows. The accumulator supporting frame 54. 56 has attachedto the side plate 56 by means of distance pieces I24 and screws I25, I26, a second drum-shape supporting frame having side plates I21, I26 spaced by struts 255. The solenoids II are arranged in the supporting frame I21, I28 in such a manner that the core of a solenoid II lies in the axis of each coupling pin 14. The core of the solenoids consist of an iron member and members H of non-magnetic material preferably aluminum. The cores are slidable in the solenoids. The coupling pins 14 are held by springs in contact with the solenoid cores, and the spring 15 of the pin 14 urges the aluminum members H of the cores into the solenoids I I, and the iron members radial slots of slide plates 54, 56, Fig. l, of an ac- 10 .out of the solenoids II. On energization of a solenoid II the iron core member 10 is thus drawn into the solenoid II and the aluminum core member 1| is moved out therefrom, or the aluminum core member is held in the out position and the iron core member in the in position. The aluminum core member 1| has at its front end a collar 12 which when the core is withdrawn from the solenoid, presses against the coupling pin 14. The pin 14 passes through a hole 250 in the lever 63, through openings 25I, 252 in the plates 56 and 54, and through a passage 253 in the lever 62, in which it can slide longitudinally and be brought into engagement with openings 254 in the engaging wheel 61. The spring 15 urges it into its inoperative position.

In front of the supporting frame I21, I26 for the solenoids II a disk I00, Fig. 1, is pivotally mounted on a pin I02 fixed in the side wall I26. A spacing roller I03 maintains exact spacing between the disk I00 and the side wall I26. The disk I00 carries cams IOI each of which corresponds to an iron core member 10 of a solenoid II, Figs. 1 and 3. Guide rollers I05 fixed on the casing I04 of the selector mechanism serve to support the disk I00. To this disk a lever I01 is jointed at I06, Fig. 4, which is connected at I06 with another lever I09 pivoted at NO in the machine casing. A spring I I I urges the lever H0 in counter-clockwise direction. A pawl H3 is mounted on a pin II2 on the lever I09 and a spring II4 holds the pawl in contact with a pin II5 on the lever I09. A cam formed on a disk ||6 cooperates with the pawl Il3, said disk |I6 being mounted on a shaft H1 and connected at I2I with'a connecting rod 16. The rod 16, under the action of the drive shaft 30, Fig. 7, imparts an oscillating movement to the disk II6 during each machine operation and the disk H6 in the forwarding stroke of the machine turns in counter-clockwise direction and in the back stroke of the machine turns clockwise. The counter-clockwise movement of the disk H6 is transmitted through the lever I01, I09 during the forward movement of the machine drive and turns the disk I00 in clockwise direction. After the disk H6 is turned through 8 the cam I20 on the disk II6 passes the pawl II 3 and releases the same. Whereupon the spring I I I returns the lever I09 and the disk I00 to the position shown in Fig. 4. During the back stroke of the machine drive the disk I I6 performs a return movement in clockwise direction during which the pawl H3 is turned clock-wise against the action of the spring II4 so that no movement of the lever I09, I01 and disk I00 can take place.

On the engaging wheel 61, Fig. 5, a link I 4| is jointed at I40 which link is connected through a pin I42 with a two armed lever I43, I 44 pivoted at I45 to an intermediate wall I46 of the machine casing and carrying a roller I41 on its upper arm I44. This roller I41 cooperates with a cam surface I 48 on a bell-crank lever I49 which is pivoted on an axis I50 and has its free arm formed as a fork I5I. The fork I5I embraces a pin I62 fixed on a slide plate I53. The slide plate is movably supported on the intermediate wall I46 by means of pins I54, I55, I56, I51 and slots I56, I59, I and I6I. The slide plate I53 carries pawls I62, I63. In front of the slide plate I53 a cam disk I64 is mounted on the pin I51 and is shown in broken lines in Fig. 5, which disk is connected by means of a rod I 65 with the rod 16, at the pin joint I2I on the disk H6. The cam disk I64 has pins I66 and I61 with which the I pawls I62, I63 can be engaged by control means not shown. The pawl I63 is turned by a spring 266 and the pawl I62 by a spring 26I into the operative position. The pawl I62 serves to set the machine for total taking and normally this pawl is'held in the inoperative position against the action of spring 26I, by means of an extension 262 of an operating bar 263. The instant of engagement of the pawls I62, I63 with the pins I66, I61 is determined by the particular operation to be carried out in the machine. By. means of the aforesaid control means the pawls I62, I63 are brought into the path of the pins I66, I61. The control of these pawls and the mode of operation of the slide plate I53 is as disclosed in U. S. patent application Serial No. 744,441.

In the forward stroke of the machine the cam disk I64 performs a movement in the clockwise direction, and in the back stroke of the machine a movement in counter-clockwise direction. If before the beginning of a machine operation the pawl I62 is released by the operating bar 263 and is turned by the spring 26I into operative position,

then the pin I66 causes the slide plate I53 to move to the right in Fig. 5 at the beginning of the machine operation. During the righthand movement of the slide plate I53 there takes place a rocking of the bell crank I49 in clockwise direction (Fig. 5) by means of the pin I52, and the cam surface I46 of the lever causes the turning of the two armed lever I43, I44 in clockwise direction, whereby the link I4I moves the engaging disk 61 in clockwise direction. The accumulators coupled to the engaging disk 61 by means of the coupling pin 14 are thus brought into engagement at the .beginning of the machine operation with the actuator gears 60, for the purpose of total taking. The dimensions of the actuator and coupling members are such that the engaging movement of the disk 61 finishes after about 20 of the crank stroke, and after a crank stroke of about 25.the total taking begins. If instead of the pawl I62 the pawl I63 comes into action through the actuating rods not shown, then the pin I61, in the back stroke 01' the machine operation pushes the slide plate I53 to the right in Fig. 5, acting through the pawl I63. The accumulators thereby coupled with the engaging wheel 61 come intov engagement with the actuator gears 60 at the beginning of the back stroke for adding.

The mechanism of the invention operates as follows.

Before the beginning of the machine operation a contact corresponding to the accumulator to be selected is closed by means of a selector key or by the paper carriage. At the beginning of the mabrought into the operative position by the cam disk I06, and likewise the coupling pins 14, and at the same time by closing the main switch 24 the solenoid II determined by the depressed selector key or the active carriage contact is energized. The other solenoids do not receive current. After about 8 of the crank movement of the mais held against the action of its spring 15 in its operative position by means of the solenoid, that is in engagement with the engaging disk 61. In the following rocking movement of the engaging wheel 61 the accumulator 5I corresponding to this coupling pin 14 is brought into engagement with the actuator gears 60 by means of the engaging levers 62, 63. The work to be done by the auxiliary power, that is the electric current, is thus limited to holding the actuator coupling pin 14 in the engaged position while the bringing of the accumulators into operative position is positively effected by the machine drive. I The engaging disk 61, according to the particular machine operation, disengages the selected accumulator at the end of the forward stroke or at the end of the backward stroke of the machine drive: At the end of the backward stroke of the machine drive the main 1' switch 24 is opened by return of the motor key to its normal position, and the corresponding coupling pin 14 is brought out of engagement with the engaging wheel 61. The coupling wheel 14 returning to its normal position pushes the iron core 10 of its associated solenoid II out of the solenoid set of differential actuators serving all of said accumulators in common, means for engaging the accumulators with the actuators, a normally ineffective coupling means between each accumulator and said engaging means, an operating member movable by the, drive means, means on said operating member for temporarily enabling the coupling means between and the engaging means and all of said accumulators near the beginning of an operation of the drive means, means for selecting accumulators to be engaged with said actuators, and auxiliary power means controlled by said selecting means, said auxiliary power means maintaining enabled only the couplings of selected accumulators during further operation of the drive means.

2. A calculating machine according to claim 1,

wherein a spring is provided for normally mainchine operation all the solenoid cores are at once taining each coupling means in ineffective position, and wherein the coupling means are adjustable by the means on the operating member against the force of said springs, said springs, returning the coupling means not maintained in adjusted position by said power means following operation of said operating means.

WERNER KNIEHAHN. 

